D10 Power - IBM pSeries 7311 D10 Service Manual

D10 Power

The following figure shows the front view of the pocessor subsystem and two I/O subsystems. Each unit
has two power supplies and two power cords for redundancy. Connect the power cords from one side of
the system to one power distribution bus in the rack. Connect the power cords from the other side of the
system to a different power distribution bus in the rack. To ensure that the systems in a rack keep running
if power is interrupted, a separate branch power line for each side of the rack must be used.
The Model D10 I/O subsystem has two power supplies. Either power supply is capable of providing the
necessary voltages and currents, independent of the other power supply. Each power supply provides 5V
dc, 3.3V dc, -12V dc, and 5V dc standby. The power supplies are hot-pluggable and may be changed one
at a time while the system is operational.
4 Eserver pSeries 7311 Model D10 and Model D20 Service Guide
1
1
1 Power supplies, power receptacles
2 Two Model D10 I/O subsystems mounted side-by-side.
3 One 7038 Model 6M2 processor subsystem
1
2
3